How natural hair pigmentation affects colour selection?

Natural hair pigmentation plays a crucial role in determining suitable color selections for hair dyeing. Hair with higher levels of eumelanin, which is darker, may require more intense or longer processing times to achieve lighter shades, while those with lower eumelanin can more easily transition to vibrant hues. Additionally, the underlying tones in the hair—such as warmth or coolness—impact how new colors will appear once applied, influencing the end result. Therefore, understanding an individual's natural pigmentation is essential for achieving the desired color outcome.